1804280

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{1049}}^1$

素因数の和:1103

約数の個数: 32

約数和(自身を含む): 4158000

約数和(自身を除く): 2353720

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 172, 215, 344, 430, 860, 1049, 1720, 2098, 4196, 5245, 8392, 10490, 20980, 41960, 45107, 90214, 180428, 225535, 360856, 451070, 902140, 1804280]

約数ペア:

[(1, 1804280), (2, 902140), (4, 451070), (5, 360856), (8, 225535), (10, 180428), (20, 90214), (40, 45107), (43, 41960), (86, 20980), (172, 10490), (215, 8392), (344, 5245), (430, 4196), (860, 2098), (1049, 1720)]